Science Class: Mixtures and Separation Methods

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which method would you use to separate iron objects from other materials?

Magnetic Attraction (correct)
Filtration
Distillation
Evaporation

Evaporation can be used to separate a solid from a gas.

False (B)

What term is used to describe a substance made of two or more elements that are chemically combined?

Compound

To separate liquids based on their boiling points, the method used is called __________.

<p>Distillation</p> Signup and view all the answers

Match the vocabulary term with its definition:

<p>Mixture = Made of two or more substances that are not chemically bonded Atom = The basic particle of which all elements are made Chemical Bond = Force of attraction between two atoms Molecule = A group of two or more atoms held together by a chemical bond</p> Signup and view all the answers

Flashcards are hidden until you start studying

Study Notes

Separating Mixtures

Magnetic attraction separates iron objects from other materials.
Evaporation separates a dissolved solid from a liquid.
Filtration separates a solid from a liquid by using a filter.
Distillation separates liquids by heating them, the liquid with the lowest boiling point turns into a gas, this gas is then cooled and condenses back into a liquid, but in a pure form.

Mixtures and Compounds

Mixtures are made when two or more substances are in the same place, but their atoms are not bonded.
Compounds are substances made of two or more elements that are chemically combined in a set ratio.
A chemical formula represents the elements in a compound and the ratio of their atoms by using symbols and numbers.
An atom is the basic particle of an element, and everything is made of atoms.
Atoms form chemical bonds to create molecules.
A molecule is a group of two or more atoms held together by chemical bonds.